feat: add noarch python migrator

[beckermr]

Description:

This PR adds a noarch: python migrator per CFEP-25.

Checklist:

• Pydantic model updated or no update needed

Cross-refs, links to issues, etc:

[codecov]

Codecov Report

Attention: Patch coverage is 95.61404% with 10 lines in your changes missing coverage. Please review.

Project coverage is 78.06%. Comparing base (84cf90f) to head (2c590fd).
Report is 68 commits behind head on main.

Files with missing lines	Patch %	Lines
conda_forge_tick/migrators/noarch_python_min.py	95.91%	8 Missing ⚠️
conda_forge_tick/make_migrators.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3093      +/-   ##
==========================================
+ Coverage   77.77%   78.06%   +0.28%     
==========================================
  Files         124      126       +2     
  Lines       13423    13651     +228     
==========================================
+ Hits        10440    10656     +216     
- Misses       2983     2995      +12     

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